DE69310670D1 - Method and system for encrypting a video image - Google Patents

Method and system for encrypting a video image

Info

Publication number
DE69310670D1
DE69310670D1 DE69310670T DE69310670T DE69310670D1 DE 69310670 D1 DE69310670 D1 DE 69310670D1 DE 69310670 T DE69310670 T DE 69310670T DE 69310670 T DE69310670 T DE 69310670T DE 69310670 D1 DE69310670 D1 DE 69310670D1
Authority
DE
Germany
Prior art keywords
encrypting
video image
video
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69310670T
Other languages
German (de)
Other versions
DE69310670T2 (en
Inventor
Ari Heikkinen
Mauri Kangas
Juha Raussi
Reino Hiltunen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Technology GmbH
Original Assignee
Nokia Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Technology GmbH filed Critical Nokia Technology GmbH
Application granted granted Critical
Publication of DE69310670D1 publication Critical patent/DE69310670D1/en
Publication of DE69310670T2 publication Critical patent/DE69310670T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
DE1993610670 1992-10-30 1993-10-22 Method and system for encrypting a video image Expired - Lifetime DE69310670T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI924941A FI92542C (en) 1992-10-30 1992-10-30 Procedure and system for encoding a video image

Publications (2)

Publication Number Publication Date
DE69310670D1 true DE69310670D1 (en) 1997-06-19
DE69310670T2 DE69310670T2 (en) 1997-11-13

Family

ID=8536136

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1993610670 Expired - Lifetime DE69310670T2 (en) 1992-10-30 1993-10-22 Method and system for encrypting a video image

Country Status (3)

Country Link
EP (1) EP0595216B1 (en)
DE (1) DE69310670T2 (en)
FI (1) FI92542C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2749999B1 (en) * 1996-06-17 1998-07-17 France Telecom METHOD FOR SCRAMBLING AND / OR SCRATCHING OF AN IMAGE SIGNAL RESPECTING THE SIGNAL SIGNATURE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH682614A5 (en) * 1990-02-21 1993-10-15 Kudelski Sa Method for scrambling and unscrambling a video signal.
GB9004901D0 (en) * 1990-03-05 1990-05-02 Space Communications Sat Tel L Television scrambler
US5161188A (en) * 1991-07-19 1992-11-03 Pires H George Scrambling video by horizontal and vertical time shifting

Also Published As

Publication number Publication date
FI92542C (en) 1994-11-25
FI924941A (en) 1994-05-01
EP0595216B1 (en) 1997-05-14
FI924941A0 (en) 1992-10-30
DE69310670T2 (en) 1997-11-13
FI92542B (en) 1994-08-15
EP0595216A1 (en) 1994-05-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition